217222 has 8 divisors (see below), whose sum is σ = 327816. Its totient is φ = 107952.

The previous prime is 217219. The next prime is 217223. The reversal of 217222 is 222712.

217222 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 217196 and 217205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (40977).

2²¹⁷²²² is an apocalyptic number.

217222 is a deficient number, since it is larger than the sum of its proper divisors (110594).

217222 is a wasteful number, since it uses less digits than its factorization.

217222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 112, while the sum is 16.

The square root of 217222 is about 466.0708100707. The cubic root of 217222 is about 60.1129354412.

Adding to 217222 its reverse (222712), we get a palindrome (439934).

The spelling of 217222 in words is "two hundred seventeen thousand, two hundred twenty-two", and thus it is an iban number.